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Bold Nova Crimson

#b11c28
Notes

Bold Nova Crimson (#B11C28) is a true red with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (355°, 73%, 40%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. For a confident two-color system, pair it with its complementary cyan. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#b11c28
RGB
rgb(177, 28, 40)
HSL
hsl(355, 73%, 40%)
HWB
hwb(355 11% 31%)
OKLCH
oklch(49.2% 0.182 23.9)
HSV
hsv(355, 84%, 69%)
LAB
lab(38.44% 57.37 33.41)
LCH
lch(38.44% 66.39 30.22)
CMYK
cmyk(0%, 84%, 77%, 31%)

Etymology

Bold
adjective

Old English beald, brave, courageous — a quality word that crossed over to color in the late seventeenth century. Bold describes a color that asserts itself: high saturation combined with mid lightness, where the hue presents itself without compromise. Sits at the center of the bold-bucket grid, near strong and rich. Closer to a presence word than a pigment word.

Nova
modifier

Latin nova, new-or-newly-bright-star. As a color modifier, nova implies a sudden-bright-and-newly-erupted-and-flaring quality, the visual register of Tycho-Brahe-and-Kepler-supernova-nova hand-sudden-bright-and-newly-erupted Tycho-Brahe-and-Kepler-and-Cassiopeia-A nova-and-sudden-bright-and-flaring surfaces under Tycho-Brahe-and-Kepler-and-Cassiopeia-A late-Renaissance-observatory-and-naked-eye sudden-stellar-light. Sits at the modifier-and-cosmic end of the grid, parallel to flare and spark in usage.

Crimson
noun

From the Old Spanish cremesin, itself from the Arabic qirmiz — the kermes scale insect, dried and ground into a brilliant carmine dye prized in the medieval Mediterranean. For centuries the most expensive red on a draper's shelf, reserved for cardinals, kings, and the cloth that gave English the word crimson. Cooler than scarlet, deeper than rose; the color of pomegranate seeds and a serious occasion.

Closest matches

The nearest named color in three reference sources, ranked by perceptual distance (ΔE76 in CIELAB). ΔE < 1 is imperceptible to most viewers; ΔE > 10 is clearly different. When two sources point to the same hex they’re merged into one tile; click any to open that color’s page.

Variations

Click any swatch to explore

Harmonies

Accessibility

Color-vision simulation

How this color appears to viewers with the four major color-vision-deficiency types. Computed via the Machado (2009) physiologically-based model. If a tile matches the original, the color reads the same to that viewer.

#b11c28
Original
#4d4627
Protanopia
#716622
Deuteranopia
#c30023
Tritanopia
#3d3d3d
Achromatopsia
WCAG contrast

The color used as foreground text against pure white and pure black, with the contrast ratio and WCAG 2.1 grade. Aim for AA (4.5:1) for body text and AA Large (3:1) for 18 pt+ headlines; AAA (7:1) is the gold standard for long-form reading surfaces.

The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon White
6.85:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
3.07:1

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